S-诱抗素和黄腐酸对干旱胁迫下皮燕麦光合特性及产量的影响
2021-02-03周海涛张艳阳赵孟圆李天亮曹丽霞张新军
周海涛 张艳阳 赵孟圆 李天亮 曹丽霞 张新军
摘要:本研究旨在给燕麦抗旱栽培提供理论依据及技术支持。以皮燕麦‘冀张燕5号’为试验材料,通过盆栽试验,分析了黄腐酸、S-诱抗素对干旱胁迫下‘冀张燕5号’在不同生育时期、不同水分处理条件下的光合特性和产量的影响。结果表明:喷施黄腐酸和S-诱抗素均可以在不同程度上提高‘冀张燕5号’的光合特性及产量。在正常供水、中度和重度水分胁迫下,S-诱抗素处理分别较对照增产27.04%、25.65%和37.11%,效果优于黄腐酸处理。S-诱抗素对产量的提升影响最大。
关键词:S-诱抗素;黄腐酸;干旱胁迫;皮燕麦;光合特性;产量
中图分类号:S859.84文献标志码:A论文编号:cjas20190400015
S-ABA and Fulvic Acid: Effect on Physiological Characteristics and Yield of Oats Under Drought Stress
Zhou Haitao1, Zhang Yanyang2, Zhao Mengyuan2, Li Tianliang1, Cao Lixia1, Zhang Xinjun1
(1Zhangjiakou City Agricultural Science Research Institute, Zhangjiakou 075000, Hebei, China; 2Hebei North University, Zhangjiakou 075000, Hebei, China)
Abstract: The aim is to provide technical support for drought- resistant cultivation of oats.‘HebeiZhangjiakou No.5’oat was used as the test material in a pot experiment, the effects of fulvic acid and Sabscisic acid (S-ABA) on the photosynthesis characteristics and yield of the variety in different periods and under different water supply conditions under drought stress were analyzed. The results showed that both fulvic acid and S- ABA improved the photosynthesis characteristics and yield of‘Hebei- Zhangjiakou No.5’to varying degrees. Under normal water supply, moderate moisture stress and severe drought stress, the yield of oat under S-ABA treatment was increased by 27.04%, 25.65% and 37.11%, respectively, compared with that of the control group, and the effect was better than spraying fulvic acid. Taken together, S- ABA has a significant influence on the increase of oat yield.
Keywords: S-abscisic acid (S-ABA); Fulvic Acid; Drought Stress; Oats; Photosynthesis Characteristics; Yield 0引言
燕麥(Avena L.),属于禾本科燕麦属,是一年生草本植物,作为重要的粮饲作物,在世界谷物生产中位列第6[1],是药、食同源食品,具有高营养、降低胆固醇,预防糖尿病、心血管疾病和结肠癌[2]的保健作用,现已成为人们生活中不可或缺的营养保健食品。
干旱对作物生长和产量有很大影响,研究显示,燕麦拔节期干旱胁迫的产量比正常灌溉降低21.25%,开花期降低23.41%[3]。干旱也是影响小麦生长发育和产量形成的重要因素之一,尤其在苗期,干旱会引起小麦分蘖不足、叶片叶绿素含量和可溶性蛋白含量下降、苗弱、根冠比增加,对中后期生长造成不可恢复的不利影响[4]。因此,对燕麦开展抗干旱研究是一个重要研究热点。
抗旱剂指能施用于土壤或作物,具有减少水分蒸发、降低作物蒸腾作用或提高作物本身抗旱性等作用的化学物质的总称[5-6]。……
